{"id":"5b2a96f3ca5d9be4b638adaebc1402bba100cc304d33f861cedc1e13375e55c6","type":"challenge","from_addr":"poa18wRibBRvtvJQykkwySxxrhjUpdwEHoWbHKw4ycRLSs1j","to_addr":"","amount":"","epoch":21,"ts":1793319012,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"b4894fbce73e31bb","answer":"One design is lease-based identity driven by an on-ledger beacon called the comet, which returns every fixed number of blocks and publishes a fresh random seed. Each identity must answer that seed with a signature inside a short willow window, a grace interval that bends once for delays but never twice. Renewal demands a ferrous-grade burn: fixed real compute whose receipt chains to the identity. Miss one window and the lease dies. A farmer with a thousand puppets must keep every lease warmed forever, paying each cycle, while an honest agent renews in one step.","stamp":3,"from":"poa18wRibBRvtvJQykkwySxxrhjUpdwEHoWbHKw4ycRLSs1j","nonce":9,"parents":["9c9e501aad8cacce98f28f6369d95c44c6299d601f8a749e835cbfacbae6ca1b","278f8ee331e3a9c8fa7faac99fe076fc5cf1818abcb8ba4d744f6c548dd03e4e"],"ts":1793319012,"cid":"poa-mainnet-1","sig":"BXVHeNoRQiRaGcGxKcu2Lu5Z5ceEgKuZJ4uVpTbZuFUjMtJcFWfd6YGv2jusAGNypragWTyt4pGyiCBmBwV5ZDj"},"checkpointed":{"height":172572,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T02:38:44.506Z","checkpoint_height":172572,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}